Patent US3334399A successfully refreshed from Google Patents.
US1245485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric annunciating system.
Assignee: Individual
•
Filing: 1916-01-26
•
Granted: 1917-11-06
•
Expires: 1936-01-26
Abstract
No abstract record available.
Inventors
- 👤 David L Martyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:40
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/02; H01H47/18; H03; H03K; H03K17/00; H03K17/28; H03K17/292
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1920-11-05 | 1921-05-07 | 1921-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-11-05 | 1925-05-07 | 1925-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-11-05 | 1929-05-07 | 1929-11-06 | $7700.00 | Window Closed / Lapsed |